I recently updated my vim to have Python3 support. I was having trouble with it, but I eventually solved the problem that I described here. Now I am trying to make a vim plugin using python3 and I wrote a test file but when I try to do source % I get:

Error detected while processing /home/marv/Documents/vimPlugins/test/plugin/test.vim:
line 4:
E319: Sorry, the command is not available in this version: python import sys
line 5:
E319: Sorry, the command is not available in this version: python import vim
line 6:
E319: Sorry, the command is not available in this version: python sys.path.append(vim.eval('expand("<sfile>:h"
)'))